Rf module interfacing
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The document discusses serial and parallel communication, describing that serial communication transmits one data bit at a time while parallel communicates multiple bits simultaneously, with serial being slower but requiring fewer cables. It also outlines the pin configurations and functions of RF transmitter and receiver modules, encoder and decoder chips, and provides examples of how RF modules can be used to transmit data wirelessly between devices like in an RC car where the transmitter sends input data to the receiver to control motors.
Rf module interfacing
- 5. SERIAL/PARALLEL COMMUNICATION Serial Communication Parallel Communication 1. One data bit is transceived at a time 1. Multiple data bits are transceived at a time 2. Slower 2. Faster 3. Less number of cables required to transmit data 3. Higher number of cables required
- 6. RF MODULE PIN CONFIGURATION (TRANSMITTER) Pin No. Name Function 1 GND Ground (0V) 2 DATA Serial Data Input 3 VCC Supply Voltage (5V) 4 ANT Antenna Output
- 7. RF MODULE PIN CONFIGURATION (RECEIVER) Pin No. Name Function 1 GND Ground (0V) 2 Data Serial Data Output 3 Data (NC) Serial Data Output (No Connection) 4 Vcc Supply Voltage (5V) 5 Vcc Supply Voltage (5V) 6 GND Ground (0V) 7 GND Ground (0V) 8 ANT Antenna Input
- 8. HT12E (PIN DESCRIPTION) Pin No. Pin Name Description 1-8 A0 ~A7 Input pins for Address settings 9 VSS Negative power supply, ground 10-13 AD8~AD11 Input pins for data D8~D11 setting and transmission enable, active low (These pins should be externally set to VSS or left open) 14 TE Transmission enable, active low 16 OSC1 Oscillator input pin 15 OSC2 Oscillator output pin 17 DOUT Encoder data serial transmission output 18 VDD Positive power supply
- 10. HT12D (PIN CONFIGURATION) Pin No. Pin Name Description 1-8 A0 ~A7 Input pins for Address settings 9 VSS Negative power supply, ground 10-13 D8~D11 Output data pins, power-on state is low. 14 DIN Serial data input pin 16 OSC1 Oscillator input pin 15 OSC2 Oscillator output pin 17 VT Valid transmission, active high 18 VDD Positive power supply
- 11. +9 Volts Ground
- 13. RF CAR RF Transmitter Encoder RF Receiver Decoder Motor Driver Input Output (To Motors)